What is the name of this common plant?

This has been growing on my fence for few years. Purple flower, red fruits. Grows better than anything I have planted. However, I have never known its name and what it can be used for. Would anyone care to identify it for me?

Creeping nightshade. Poisonous, so probably not used for anything.

Thanks tjasko. It is a weed here

Yeah…i see that a lot when i weed my flower beds…comes up everywher.e Amazing at how fast some weeds grow.